Yep, you guessed it this is bigger(almost?) than the space-ception because well(No one knows). The Unlimited Blankness is your typical end all be all. Not really much else to say.
Why is it white?
The reason it's white (and not black) is because, technically, all colors except black make black, and if you add black to itself repeatedly, you get darker and darker. The reason this verse is white is because it went below the negative integer limit for brightness and looped back to the top.
How is it completely empty with Multi-Realms in it?
You see, since this verse is beyond the infibit integer limit times bigger than The Multi-Realm, the collection of realms shrank to a size so small compared to this verse, that it's smaller than an infinitesimal point.
This is the biggest…er thing ever……… Unless……